/*
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 * and open the template in the editor.
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package ru.miit.elearning.servlets;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import ru.miit.elearning.hibernate.dao.ConfigurationDAO;
import ru.miit.elearning.hibernate.dao.HibernateUtil;
import ru.miit.elearning.hibernate.dao.WebLabUtil;

/**
 *
 * @author Cyclone
 */
public class DeletePropertyServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        String message = null;

        String from = null;
        Session session = null;

        try {
            int propertyId = Integer.parseInt(request.getParameter("id"));
            from = request.getParameter("from");

            session = HibernateUtil.getSessionFactory().getCurrentSession();
            session.beginTransaction();

            ConfigurationDAO configurationDAO = new ConfigurationDAO(session);

            if (request.isUserInRole("admin")) {
                String name = configurationDAO.deleteProperty(propertyId);
                message = "Дополнительное свойство \"" + name + "\" удалёно";
            } else {
                message = "У Вас нет прав на удаление дополнительного свойства";
            }

            if (session != null && session.isOpen()) {
                session.getTransaction().commit();
            }

            getServletContext().setAttribute("message", message);
            if (from == null) {
                response.sendRedirect("Configuration");
            } else {
                response.sendRedirect(from);
            }


        } catch (Exception e) {
            e.printStackTrace();
            if (session != null && session.isOpen()) {
                session.getTransaction().rollback();
            }

            message = "<p>Ошибка удаления дополнительного свойства";
            message += WebLabUtil.prepareExceptionRef(request.getSession(), e);
            message += "</p>";

            getServletContext().setAttribute("message", message);
            if (from != null) {
                response.sendRedirect(from);
            } else {
                response.sendRedirect("Configuration");
            }
            
        } finally {
            if (session != null && session.isOpen()) {
                session.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
